Exponential Evidence for Quantum Mechanics Pt. 1

Question 1

William __ developed a modification of the Geissler tube into what is known as the __ tube to demonstrate and study these rays, later determined to be a stream of electrons.

Answer 1

Crookes

Question 2

Discovered clean metal surfaces emit charges when exposed to UV light. Unit of frequency named after him.

Answer 2

Hertz

Question 3

The simpliest definition describes a __object as a perfect absorber of EM waves

Answer 3

Blackbody

Question 4

Planck’s constant divided by 2*π

Answer 4

H-Bar

Question 5

6.626 E -34 J*s

Answer 5

Planck’s Constant

Question 6

To state without proof or justification

Answer 6

Postulate

Question 7

A Johns Hopkins Univ faculty member who developed high quality diffraction gratings which replaced slits for studying colors of light

Answer 7

Henry Augustus Rowland

Question 8

A satellite, launched in 1989, which mapped in great detail the microwave emissions in the universe.

Answer 8

COBE

Question 9

In 1885, came up with an empirical formula which explained the 4 visible lines in the hydrogen diffraction grating spectrum

Answer 9

Johann Balmer

Question 10

Max__ discovered the relationship between the energy of a photon and its frequency, E = hf

Answer 10

Planck

Question 11

Wilhelm __. Realized cathode rays were negatively charged

Answer 11

Hallwacks

Question 12

A device that can be made by cutting two (or more) narrow slits in a piece of aluminum foil. Also used to separate light into its component colors

Answer 12

Slits

Question 13

Unit of energy typically used in kindergarten physics

Answer 13

Joule

Question 14

Heinrich __ is credited with building early gas discharge tubes used to demonstrate the principles of electric glow discharge, similar to modern neon lighting

Answer 14

Geissler

Question 15

Launched in 2001, this probe has made high angular resolution measurements of the microwave background

Answer 15

WMAP

Question 16

This material was a significant impediment to the sensitivity of the Bell Laboratory’s Holmdel NJ antenna..

Answer 16

Pigeon poop

Question 17

Photons produced when charged particles slow down extremely rapidly

Answer 17

Bremsstralung

Question 18

A computed tomography scan makes use of computer-processed combinations of many X-ray measurements…

Answer 18

Cat-Scan

Question 19

511keV

Answer 19

Electron mc²

Question 20

1.602E-19 J

Answer 20

Electronvolt

Question 21

An imaging technique commonly used by physicians to obtain real-time moving images of the internal structures of a patient

Answer 21

Fluoroscopy

Question 22

1.602E-19 Coulombs

Answer 22

Fundamental-Charge

Question 23

A curious calculation questioning why the sky is dark at night

Answer 23

Olbers’ Paradox

Question 24

The photoelectric effect demonstrated that EM waves have fixed energies determined by the frequency, rather than an adjustable energy implied by the __ vector.

Answer 24

Poynting

Question 25

Mysterious rays orignating from Crookes tubes which could not be deflected by a magnetic field, but which caused photographic plates to be exposed

Answer 25

Xrays

Question 26

Photons of energy greater than the work function eject electrons from a slab of material. KE = energy of incoming photon - work function of the material

Question 27

A wedge, usually made out of glass, used to separate light into its component colors in the ancient days

Answer 27

Prism

Question 28

Scientists realized the Balmer forumla could be extended to describe hydrogen atom transitions in the UV and IR regions. The generalized formula became known as the __ formula

Answer 28

Rydberg

Question 29

The Rayleigh-Jeans formula indicates the most intense wavelength would be in the far-UV, in contrast to measurements which indicate no emission in the UV

Answer 29

Ultraviolet Catastrophe

Question 30

1.055E-34 J\*s

Answer 30

H Bar

Question 31

Usually, detection of radiation in the long-IR range of the EM spectrum and produce images of that radiation, called thermograms.

Answer 31

Thermal-imaging

Question 32

The conditions of the universe 380,000 years after the Big Bang are now evident as Cosmic Microwave Background radiation described by a __ degree blackbody spectrum

Answer 32

2.7

Question 33

The minimum energy required to remove an electron from a particular material. Now-a-days we would probably call it the electron binding energy

Answer 33

Work Function

Question 34

A formula which gives the mazximum wavelength of emission from a blackbody radiator

Answer 34

Weins-Displacement

Question 35

12345 eV\*Angstrom

Answer 35

Approx. h\*c

Question 36

Phillip\_\_. He discovered that the energy of the electrons ejected from a cathode depends only on wavelength, and not the intensity of, the incident light.

Answer 36

Lenard (Leonard?)

Question 37

the voltage applied between ends of the photoeffect vacuum tubes to prevent electrons from traversing the tube.

Answer 37

Stopping Potential

Question 38

Demonstrated that the cathode rays were negatively charged and measured their charge/mass ratio

Answer 38

J.J. Thompson

Question 39

1240 eV nm

Answer 39

H Bar\*c

Question 40

Unit of energy used when discussing electron structure and electronic configurations

Answer 40

Electron Volt

Question 41

4.15 E eV\*s

Answer 41

Plancks Const

Question 42

A formula which predicts the total intensity emitted from a surface at a given temperature

Answer 42

Stefan-Boltzmannn

Question 43

A formula, dereived from classical EM physics and thermodynamicsm, to predict the emitted intensity as a function of wavelength

Answer 43

Rayleigh-Jeans

Question 44

Distribution function used by Einstein to fudge the DeBye calculation and thereby obtain a better quality agreement with the specific hear as a functin of temperature

Answer 44

Planck Blackbody

Question 45

An idea to solve the UV-catastrophe by assuming some sort of oscillators are responsible for the blackbody spectrum AND energy difference

Question 46

A photon that is generated by either: 1. inner atomic electrons jumping orbits 2. charged particles deaccelerating